Get this otterbox, its big. Put your gun in(UNLOADED!) wallet/keys/phones etc... If anyone asks, says you have keys/wallet/phones inside and don't trust their safes to store while you waterpark.
SHTF vs TEOTWAWKI you ask? SHTF, just some crap on the ceiling and walls, TEOTWAWKI end of the world as we know it. Orignally made by 9mm/®™©